Katmai, Alaska (#1)

Katmai National Park, Alaska. The great 1912 eruption of Novarupta Volcano
covered the flanks of Katmai Volcano with thick ash falls still visible
in this photo taken from a light plane 51 years later. The summit of Katmai
collapsed into a caldera (off to the right side) as magma was removed from
beneath the peak. Trident volcano (center) was erupting a lava dome and andesite
flow.